Re: [PATCH v1 03/13] iio: adc: ti-tsc2046: Drop unused member from private data

[Uwe Kleine-König (The Capable Hub)]

On Mon, Jun 22, 2026 at 01:30:09PM +0300, Andy Shevchenko wrote:
> On Fri, Jun 19, 2026 at 05:54:31PM +0200, Uwe Kleine-König (The Capable Hub) wrote:
> > .dcfg is a write only field and thus it can be dropped.
> 
> Why isn't squashed with the previous one?

Because they are two different logical changes. But I don't feel strong
here and can squash them together.

> Also, what about struct field and the accompanying data type
> definition?

It took me a while to understand that suggestion. I guess you're talking
about

diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c
index 97ecc429db27..125f6d7e2d84 100644
--- a/drivers/iio/adc/ti-tsc2046.c
+++ b/drivers/iio/adc/ti-tsc2046.c
@@ -121,11 +121,6 @@ struct tsc2046_adc_group_layout {
 	unsigned int skip;
 };
 
-struct tsc2046_adc_dcfg {
-	const struct iio_chan_spec *channels;
-	unsigned int num_channels;
-};
-
 struct tsc2046_adc_ch_cfg {
 	unsigned int settling_time_us;
 	unsigned int oversampling_ratio;
@@ -213,11 +208,6 @@ const struct iio_chan_spec name ## _channels[] = { \
 
 static DECLARE_TI_TSC2046_8_CHANNELS(tsc2046_adc, 12);
 
-static const struct tsc2046_adc_dcfg tsc2046_adc_dcfg_tsc2046e = {
-	.channels = tsc2046_adc_channels,
-	.num_channels = ARRAY_SIZE(tsc2046_adc_channels),
-};
-
 /*
  * Convert time to a number of samples which can be transferred within this
  * time.
@@ -738,7 +728,6 @@ static void tsc2046_adc_parse_fwnode(struct tsc2046_adc_priv *priv)
 
 static int tsc2046_adc_probe(struct spi_device *spi)
 {
-	const struct tsc2046_adc_dcfg *dcfg = &tsc2046_adc_dcfg_tsc2046e;
 	struct device *dev = &spi->dev;
 	struct tsc2046_adc_priv *priv;
 	struct iio_dev *indio_dev;
@@ -767,8 +756,8 @@ static int tsc2046_adc_probe(struct spi_device *spi)
 
 	indio_dev->name = TI_TSC2046_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->channels = dcfg->channels;
-	indio_dev->num_channels = dcfg->num_channels;
+	indio_dev->channels = tsc2046_adc_channels;
+	indio_dev->num_channels = ARRAY_SIZE(tsc2046_adc_channels);
 	indio_dev->info = &tsc2046_adc_info;
 
 	ret = devm_regulator_get_enable_read_voltage(dev, "vref");

on top of my changes. Yes, that makes sense.

Best regards
Uwe

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